mi-16 it mate!superb little motors then,power and handling.just make sure you fit the mi-16 box in too.it'll give it a nice top end down the track straights a 1.9 box will run out of puff.mi-16 is good for 150mph

plus with the grunt the mi has it'll spin the wheels easy enough on the mi box let alone the 1.9 box.

top looking car though mate.